US1906538A

US1906538A - Lubricating system for an internal combustion engine

Info

Publication number: US1906538A
Application number: US485899A
Authority: US
Inventors: Harold D Church
Original assignee: White Motor Co
Current assignee: White Motor Co
Priority date: 1930-10-02
Filing date: 1930-10-02
Publication date: 1933-05-02
Anticipated expiration: 1950-05-02

Description

H. D. CHURCH May 2, 1933.

LUBRICA'IING SYSTEM FOR AN INTERNAL COMBUSTION ENGINE Filed Oct. 2. 1950 m" 1 'ENTOR H D. C H u RC H Patented May 2, 1933 u NiTEn- STA-Tias PATENT OFFICE rumors) D. cannon, or CLEVELAND, .onio, Assmiioa ro rim, wrn'rn moron comm, or CLEVELAND, 01110, A, coarona'rronor omo' LnBmcAa-ma'sirsrm Ion an INTERNAL comst'rsrron ENGINE I limitation med October 2, 1936.- Serial so. 485,899. 7

. This invention. relates to alubricating system foran internal combustion engine. 1

It is an object of this invention to. providea simple and efficient circulatory lubricating 5 system for an internal combustion engine embodying a radiator or like apparatus for cooling the lubricant usedtherein. i

It is a further object of this invention to provide. a lubricating-system, as defined 1n the first object of inventionabovie set forth,

in which a leak in the cooling apparatus-will neither deplete the system of lubricant, or'

terminate the delivery of lubricant to the wearing surfaces of the engine. 1

Further objects of invention-will appear in the following description, when read in connection with the accompanying drawing which forms a part of this application, and in which; a T

The figure is a side elevation, partly in section, of an internal combustion engine provided with a lubricating system embodying this invention.

With the exception of the lubricating system hereinafter described'the engine illustrated in the drawing is of a more or less conventional type. It comprises a cylinder block 10, a crank case 11, an oil pan 12, a cam shaft 13 mounted at one side of the crank case in bearings 14, and a crank shaft 15 mounted in the central portion of the crank case in bear ings 16,

Mounted on the side wall of the crank case, 5 11 below the cam shaft 13. there is a pair of oil pumps 17 and 18 driven from the cam shaft bymeans of a common driving shaft 19. The upper'pump 17 is provided-with an intake pipe 20. extending downward into the oil pan 12, and communicates througha pipe 21 and a manifold 22 with a. plurality ofrducts 23 leading'to the'cam shaft andcrank shaftbearings 14 and 16. The-lower pump 18 provided with an inta-ke'pipe v24 which ex- 4 tends into the oil pan 12 to a less depth than engine driven fan 28 vwhich acts to bothtcool the radiatort27 andaforwardly disposed radiator (not shown for the engine cooling water. The chamber 26 communicates with a chamber 29 in lower header of the radiator 5 v 27 through a tortuous system of conduits'comterior of the oilflpan 12 through a pipe 32, a

pair of. serially connected

ducts

33 and 34 formed in the bottom wall of the oil pan, and an upwardly directed. pipe 35 whichextends into the lower flared-end-of the intakepipe20. During operation of the engine,-the pump 18 draws from the oil pan 12 a volumetric l flow ofoil in excess to that drawn up by the simultaneously operated pump 17 delivering thesamethrough the pipe 25 into the radiator27, and from the radiator 27through the "

conduits

32,33, 34 and 35 into the mouth of v the intake pipe 20. The pump 17 draws up a portion of-the cooled oil delivered into the mouth of the intakepipe20 by the pump 18,

- and deliversit through thespipe 21, manifold 22, and ducts 23 to the engine bearings 14 and 16, from where it flows, downward into the oil pan 12, Theremainingport-ion of the oil delivered into the intake pipe 20 by the pump 18 flows back into the reservoir through the annular space intermediate the upper end of the pipe 35 and the circumjacentlower end 35 of the intake pipe 20.;- I

.Should the pump 18 fail to deliver a flow of oil into the intake pipe 20, from any. cause other than the system having been depleted ;.of an amount of-oilsufiicient to lower the oil level within the oil pan below the lower end of theplpe20, thejpumplS will draw-oil directly from the oil pan. 12 through the annular spaoe'existing between theupper end .'of the pipe 35 and the lower end-of the intake pipe 20, delivering the same to the engine bearings 14,and16 in.1placeof the cooled 7 oil normally delivered theretm. 1

It is to be noted that the external parts of the system, including the radiator 27, the

pipe'32, and the upper portion of the pipe 25, are so locatedthat a leak created therein can not possibly result in the expulsion from the system bysthe pump. 18 of a suflicient amount of oil tolower the oil level in the oil pan below the-intake pipe 20, and that as a result the bearings 14 and 16 will be supplied with oil by the pump 17, notwithstanding that the pump 18 has expelled from the system through a leak in the external arts the maximum amount of oil permitt by the allocation of the external parts.

Although the foregoing description is necessarily of a detailed character, in order that the invention may be completely set forth, it is to be understood that the specific termionologyis not intended to be restrictive or confining, and that various rearrangements of parts and modifications in structural details may be resorted to without departing from the scope or spirit of the invention as claimed. r

I claim as my invention:

1. In a lubricating system for an internal combustion engine, a lubricant reservoir, means for delivering lubricant from said reservoir to wearing surfaces in said engine including an intake conduit opening intosaid reservoir,means for returning to said reservoir the lubricant supplied to said wearing surfaces, and means for cooling the oil in said system including a radiator, a conduit communicatin at its opposite ends with said reservoir an said radiator resigned to convey lubricant from said reservoir to said radiator, and a conduit for conveying lubricant from said radiator communicating at its opposite ends with said radiator and said reservoir, said first named means and said second named means being so arranged and designed that said first named means is supplied by said second named means with lubricant substantially unmixedwith the lubricant in said reservoir. a

2. In a lubricating system for an'internal combustion engine, a lubricant reservoir, means for delivering lubricant from said reservoir to wearing surfaces in said engine including an intake conduit opening into said reservoir, means for returning .to said reservoir the lubricant supplied to said wearing surfaces, and means for cooling the oil in eluding an intake conduit opening into said reservoir, means for returning to said reservoir the lubricant supplied to said'wearing surfaces, and meansfor cooling the oil in said .system including-a radiator, a conduit for conveyingoil-from said-reservoir-to said radiator, and aconduit=for conveying oil from said radiatorextendinginto .the mouth of the aforesaid intake conduit and communicating withsaid reservoir through a space intermediate its discharge end and the inner wall ofthe aforesaid intake conduit.

4. In a lubricating system for an internal combustion engine, a lubricant reservoir, means for delivering lubricant from said reservoir to wearing surfaces in saidengine including an intake conduit opening into said reservoir, means for returning to said reservoir the'lub'ricant'supplied to said wearing surfaces, and means for-cooling the oil in said system including a radiator located outside of said engine-above said reservoir, a conduit for conveying lubricant from said reservoir to said radiator-communicating at one end with said reservoir at a point above the mouth ofjthe' aforesaid intake conduit and at its opposite-end with said radiator, and a conduit for conveying'lubricant from said radlator communicating at its'opposite ends with said-radiator and-said reservoir, said first name-d means and said second" named means being so arranged and designed that said first named means is supplied by said second named means with lubricant substantlally unmixed with the lubricant in said reservoir. v i a 5. In a lubricating system for an' internal combustion engine; a" lubricant reservoir, means a for delivering lu'bricantfiom said reservoir to weari'ngsurfaces in said engine including an intake-conduit opening into said reservoir, means -fo'r' returning' to said reservoir the lubricant supplied to said wearing surfaces, and means for cooling the oil in said system including a radiator located outside of sai-d'engine above said reservoir, a conduit for conveyin'glubric'ant from said reservoir to-said radiator,- communicating at one end with said' reservoir at a point above the mouth of the aforesaid intake pipe and at its other end withs'aidi-radiaton-a con- 1 duit for conveying oil fromsaid radiator extending into the mouth of the aforesaid intake conduit and communicating-with said reservoir through a space intermediate its discharge end and the "inner'wallof the aforesaid intakeconduit, and an engine driven fan for cooling said radiator.

In testimony whereof I hereunto aflix my signature this 26th day of September, 1930. v HAROLD D, CHURCH.

CERTIFICATE OF CORRECTION.

Patent No. 1,906,538. May 2, 1933.

HAROLD D. CHURCH.

iiication of the line 34, claim the syllable It is hereby certified that error appears in the printed spec above numbered patent requiring correction as follows: Page 2, l, for "resigned" read "designed"; and line 65, claim 3, after "ervoir" insert the word "to"; and with these corrections therein that case in the Patent Office.

Signed and sealed this 23rd day of May, A. D. 1933.

the same may conform to the record of the M. J. Moore. Acting Commissioner of Patents.

(Seal) that the said Letters Patent should be read.-